CN111283520A - Double-station automatic outer arc grinding machine for drum brake shoe - Google Patents
Double-station automatic outer arc grinding machine for drum brake shoe Download PDFInfo
- Publication number
- CN111283520A CN111283520A CN202010244901.0A CN202010244901A CN111283520A CN 111283520 A CN111283520 A CN 111283520A CN 202010244901 A CN202010244901 A CN 202010244901A CN 111283520 A CN111283520 A CN 111283520A
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- grinding
- pressing plate
- workpiece
- brake shoe
- suspension arm
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- 238000003825 pressing Methods 0.000 claims abstract description 66
- 230000007246 mechanism Effects 0.000 claims abstract description 47
- 239000000725 suspension Substances 0.000 claims abstract description 26
- 210000000078 claw Anatomy 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005498 polishing Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000002783 friction material Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241001272720 Medialuna californiensis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/26—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding workpieces with arcuate surfaces, e.g. parts of car bodies, bumpers or magnetic recording heads
- B24B19/28—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding workpieces with arcuate surfaces, e.g. parts of car bodies, bumpers or magnetic recording heads for grinding shoes or linings of drum brakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/005—Feeding or manipulating devices specially adapted to grinding machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
- B24B47/06—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by liquid or gas pressure only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention discloses a drum brake shoe double-station automatic outer arc grinding machine which comprises an operation platform, a pressing plate retracting mechanism, a pressing plate pressing mechanism, a grinding mechanism and a hoisting mechanism for carrying a brake shoe, wherein the pressing plate retracting mechanism is arranged on the operation platform; two workpiece positioning tools are arranged on the operation platform, hollow rotating shafts are arranged on one sides of the two workpiece positioning tools, and grinding positioning tools are arranged at the upper ends of the rotating shafts; workpiece correcting mechanisms are arranged on two sides of the grinding and positioning tool; the pressing plate retracting mechanism comprises a pressing plate advancing and retreating cylinder, a suspension arm lifting cylinder and a suspension arm, the suspension arm is fixed with an end plate of the suspension arm lifting cylinder, and electromagnets are arranged at two ends of the suspension arm; the pressing plate pressing mechanism comprises a pull rod which is sleeved in the rotating shaft and can move up and down, and a pressing block is arranged at the upper end of the pull rod; and grinding mechanisms are arranged on two sides of the operation platform and comprise grinding wheels for polishing the outer arcs of the brake shoes. The invention can effectively improve the production efficiency, reduce the labor intensity of workers and reduce the labor cost.
Description
Technical Field
The invention relates to the technical field of brake shoe grinding and processing, in particular to a drum brake shoe double-station automatic outer arc grinding machine.
Background
The brake shoe is a fitting which is pushed outward by a brake cam or a push rod to expand and press a brake drum to play a braking function and is shaped like a half moon. The brake shoe generally comprises an iron lining plate and a friction material, wherein the friction material forms a brake friction surface on the arc-shaped iron lining plate, the roughness of the friction surface and the tolerance of the shape of an outer arc directly influence the brake effect of the brake shoe, and the processing requirement on an outer arc grinding machine is stricter and stricter along with the technical progress of the automobile industry. The existing brake shoe outer arc grinding machine needs to manually support the tension spring and then place a workpiece (the workpiece refers to a pair of brake shoes connected together by the spring), and needs to manually place a pressing plate after placing the workpiece, and each grinding machine needs to be provided with a worker and only can grind one pair of workpieces, so that the production efficiency is low, the labor intensity of the workers is very high, and the production cost is also high.
Disclosure of Invention
The invention provides a drum brake shoe double-station automatic outer arc grinding machine which is beneficial to improving the production efficiency, reducing the labor intensity of workers and saving the labor cost, aiming at solving the defects of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the double-station automatic outer arc grinding machine for the drum brake shoes comprises an operation platform, a pressing plate retracting mechanism, a pressing plate pressing mechanism, a grinding mechanism and a hoisting mechanism for transporting the brake shoes;
two workpiece positioning tools are arranged on the operation platform, a hollow rotating shaft is arranged on one side of each workpiece positioning tool, and a grinding positioning tool is arranged at the upper end of each rotating shaft; workpiece correcting mechanisms for correcting the positions of the brake shoes are arranged on two sides of the grinding and positioning tool;
the pressure plate retracting mechanism comprises a pressure plate advancing and retreating cylinder, a suspension arm lifting cylinder and a suspension arm; the pressing plate advancing and retreating cylinder is arranged between the two grinding positioning tools, the suspension arm lifting cylinder is fixed with an end plate of the pressing plate advancing and retreating cylinder, the suspension arm is fixed with the end plate of the suspension arm lifting cylinder, and electromagnets used for adsorbing the pressing plate are arranged at two ends of the suspension arm;
the pressing plate pressing mechanism comprises a pull rod which is sleeved in the rotating shaft and can move up and down, and a pressing block is arranged at the upper end of the pull rod;
and grinding mechanisms are arranged on two sides of the operation platform and comprise grinding wheels for grinding the outer arcs of the brake shoes.
Furthermore, the workpiece correcting mechanism comprises workpiece correcting cylinders symmetrically arranged on two sides of the grinding and positioning tool, a second mounting plate is arranged on an end plate of each workpiece correcting cylinder, and two correcting clamping blocks are arranged on the second mounting plate.
Further, the hoisting mechanism comprises two portal frames arranged on two sides of the operation platform; the upper end of portal frame sets up pneumatic tongs and advances and retreat the cylinder, sets up pneumatic tongs lift cylinder on the slip table that pneumatic tongs advanced and retreats the cylinder, sets up first mounting panel on the end plate of pneumatic tongs lift cylinder, and the lower extreme of first mounting panel sets up two pneumatic tongs, and the distance between two pneumatic tongs equals the distance between work piece location frock to the grinding location frock.
Furthermore, the pneumatic gripper comprises a pneumatic claw and an inner support piece fixed on fingers of the pneumatic claw, wherein an inner support boss integrally formed with the inner support piece is arranged on the inner support piece.
Furthermore, the lower end of the pull rod extends out of the rotating shaft, and the lower end of the pull rod is connected with a hydraulic rod of the hydraulic cylinder.
Furthermore, a notch is formed in the pressing plate, and the width of the notch is larger than the diameter of the pull rod and smaller than the diameter of the pressing block.
Furthermore, the grinding mechanism comprises a linear guide rail, a slide carriage capable of sliding on the linear guide rail, a first servo motor for driving the slide carriage to move on the linear guide rail and a motor for driving a grinding wheel to rotate, and the grinding wheel is rotatably arranged on the slide carriage.
Furthermore, a circular boss with the same diameter as the brake shoe is arranged at the upper end of the workpiece positioning tool, a positioning pin is arranged at the upper end of the circular boss, a cutting groove is formed in one side, away from the positioning pin, of the circular boss, a groove plate is arranged in the cutting groove, and two positioning wedges which are integrally formed with the groove plate are arranged on the groove plate; the two positioning wedges are arranged at intervals, and the opposite surfaces of the two positioning wedges are inclined surfaces.
Furthermore, the center of the grinding positioning tool is provided with a shaft hole matched with the rotating shaft, and the top of the grinding positioning tool is provided with a pin shaft and a clamping plate for positioning the brake shoe.
The invention can process two workpieces simultaneously, when in operation, a worker can take one workpiece by both hands and place the two workpieces into the workpiece positioning tool at the same time, the worker does not need to manually prop open the workpieces, and the propping and the placing of the pressing plate of the workpieces are automatically finished by the invention, thereby improving the automation degree of the outer arc grinding process of the brake shoe, effectively improving the production efficiency and reducing the labor intensity of the worker; meanwhile, compared with the traditional single-station grinding machine, the invention needs less staff, and can save labor cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an overall assembly view of the present invention;
FIG. 2 is a perspective view of the hoisting mechanism and the positioning tool of the present invention after being partially assembled;
FIG. 3 is a front view of FIG. 2;
FIG. 4 is a left side view of FIG. 2;
FIG. 5 is a top view of FIG. 2;
FIG. 6 is a structural view of a grinding mechanism of the present invention;
FIG. 7 is a structural diagram of the grinding positioning tool driven to rotate and the pull rod driven to move up and down according to the invention;
FIG. 8 is a perspective view of FIG. 7;
FIG. 9 is a block diagram of a pneumatic gripper of the present invention;
FIG. 10 is a block diagram of a workpiece straightening mechanism according to the present invention;
FIG. 11 is a structural view of a press plate of the present invention;
FIG. 12 is a block diagram of the platen retraction mechanism of the present invention;
FIG. 13 is a block diagram of a workpiece positioning tool of the present invention;
fig. 14 is a structural view of the grinding positioning tool of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1-14, the invention provides a drum brake shoe double-station automatic outer arc grinding machine, which comprises an operation platform 1, a pressing plate retracting mechanism, a pressing plate 2, a pressing plate pressing mechanism, a grinding mechanism and a hoisting mechanism for carrying brake shoes.
The operation platform 1 is arranged on a frame 29, two workpiece positioning tools 3 are arranged on the operation platform, a hollow rotating shaft 4 is arranged on one side of each of the two workpiece positioning tools 3, and a grinding positioning tool 5 is arranged at the upper end of each rotating shaft 4; two sides of the grinding positioning tool 5 are provided with workpiece correcting mechanisms 6 for correcting the positions of the brake shoes; a second servo motor 28 is further arranged below the working platform 1, and the second servo motor 28 drives the rotating shaft 4 to rotate through a gear set.
The pressing plate retracting mechanism comprises a pressing plate advancing and retreating cylinder 10, a suspension arm lifting cylinder 11 and a suspension arm 12; the pressing plate advancing and retreating cylinder 10 is arranged between the two grinding and positioning tools 5, the suspension arm lifting cylinder 11 is fixed with an end plate of the pressing plate advancing and retreating cylinder 10, the suspension arm 12 is fixed with the end plate of the suspension arm lifting cylinder 11, and electromagnets 13 used for adsorbing the pressing plate 2 are arranged at two ends of the suspension arm 12.
The pressing plate 2 is provided with a notch 201, and the width of the notch 201 is larger than the diameter of the pull rod 14 and smaller than the diameter of the pressing block 1401.
The pressing plate pressing mechanism comprises a pull rod 14 which is sleeved in the rotating shaft 4 and can move up and down, and a pressing block 1401 is arranged at the upper end of the pull rod 14; the lower end of the pull rod 14 extends out of the rotating shaft 4, and the lower end of the pull rod 14 is connected with a hydraulic rod of the hydraulic cylinder 23.
The grinding mechanism is arranged on each of two sides of the operation platform 1 and comprises a grinding wheel 15, a linear guide rail 24, a slide carriage 25, a first servo motor 26 and a motor 27; the linear guide rail 24 is provided with a slide block, and the slide carriage 25 is fixed above the slide block; the first servo motor 26 is arranged below the slide carriage 25, and the slide carriage 25 is driven to move on the linear guide rail 24 through the first servo motor 26. The grinding wheel 15 is used for grinding the outer arc of the brake shoe and is rotatably arranged on the slide carriage 25; the motor 27 is fixed with the slide carriage 25, and the motor 27 drives the grinding wheel 15 to rotate.
In the invention, the workpiece correcting mechanism 6 comprises workpiece correcting cylinders 7 symmetrically arranged at two sides of the grinding and positioning tool 5, a second mounting plate 8 is arranged on an end plate of the workpiece correcting cylinder 7, and two correcting clamping blocks 9 are arranged on the second mounting plate 8.
In the invention, the hoisting mechanism comprises two portal frames 16 arranged at two sides of the operation platform 1; the upper end of the portal frame 16 is provided with a pneumatic gripper advancing and retreating cylinder 17, a pneumatic gripper lifting cylinder 18 is arranged on a sliding table of the pneumatic gripper advancing and retreating cylinder 17, a first mounting plate 19 is arranged on an end plate of the pneumatic gripper lifting cylinder 18, the lower end of the first mounting plate 19 is provided with two pneumatic grippers 20, and the distance between the two pneumatic grippers 20 is equal to the distance between the workpiece positioning tool 3 and the grinding positioning tool 5. The pneumatic gripper 20 comprises a pneumatic claw 21 and an inner support member 22 fixed on fingers of the pneumatic claw 21, wherein an inner support boss 2201 integrally formed with the inner support member 22 is arranged on the inner support member 22.
In the invention, the upper end of the workpiece positioning tool 3 is provided with a circular boss 301 with the same diameter as that of a brake shoe, the upper end of the circular boss 301 is provided with a positioning pin 302, one side of the circular boss 301, far away from the positioning pin 302, is provided with a cutting groove 304, a groove plate 305 is arranged in the cutting groove 304, and two positioning wedges 306 integrally formed with the groove plate 305 are arranged on the groove plate 305; the two positioning wedges 306 are arranged at intervals, and the opposite surfaces of the two positioning wedges 306 are inclined surfaces.
In the invention, the center of the grinding and positioning tool 5 is provided with a shaft hole matched with the rotating shaft 4, and the top of the grinding and positioning tool 5 is provided with a pin shaft 501 and a clamping plate 502 for positioning a brake shoe.
The initial position of the hoisting mechanism is shown in figures 2 and 4, and the working process of the hoisting mechanism is as follows:
1) placing a workpiece: the worker places the workpiece on the two workpiece positioning tools 3, and the two positioning wedges 306 can facilitate the positioning of the workpiece;
2) taking a pressing plate: the hydraulic cylinder 23 extends to push the pull rod 14 to move upwards, the pressing block 1401 is separated from the pressing plate 2, and the pressing plate 2 is stopped being pressed; the pressing plate advancing and retreating cylinder 10 contracts, the electromagnet 13 moves to the position above the pressing plate 2, the suspension arm lifting cylinder 11 contracts, the electromagnet 13 descends, and then the electromagnet 13 is electrified to suck the pressing plate 2; then the lifting cylinder 11 extends, the pressure plate advancing and retreating cylinder 10 extends, and the upper part of the workpiece of the pressure plate 2 is moved away;
3) grabbing a workpiece: the two pneumatic gripper lifting cylinders 18 extend simultaneously, the four pneumatic grippers fall simultaneously, the air claws 21 open when the four pneumatic grippers fall to a set height, a workpiece is gripped in an internal supporting mode, and then the two pneumatic gripper lifting cylinders 18 contract simultaneously to lift the workpiece to the set height; the pneumatic gripper on the right side in the drawing grabs the workpiece on the workpiece positioning tool, and the pneumatic gripper on the left side grabs the ground workpiece on the grinding positioning tool;
3) carrying the workpiece: the pneumatic gripper advancing and retreating cylinder 17 drives the pneumatic gripper lifting cylinder 18 to move leftwards, the pneumatic gripper on the right side conveys a workpiece to be ground to the position right above the grinding positioning tool, and the pneumatic gripper on the left side conveys the ground workpiece to the position above the conveying belt;
4) putting a workpiece into a grinding and positioning tool: the two pneumatic gripper lifting cylinders 18 extend simultaneously, the pneumatic gripper on the right side puts the workpiece to be ground into the grinding positioning tool 5, and the pneumatic gripper on the left side puts the ground workpiece into a conveyor belt (not shown) on the right side of the equipment; because the workpiece is in an inner supporting state in the grabbing process, the two brake shoes of each pair of workpieces are separated, and the pin shaft 501 and the clamping plate 502 are clamped between the two brake shoes of the workpiece after the workpiece is placed into the grinding and positioning tool 5;
5) workpiece correction: the workpiece correcting cylinders 7 on the two sides of the grinding and positioning tool 5 extend simultaneously to push the correcting clamping blocks 9 to contact with the workpiece, so that the workpiece is corrected;
6) placing a pressing plate: the pressing plate advancing and retreating cylinder 10 contracts, the electromagnet 13 adsorbed with the pressing plate 2 moves to the position above the pressing plate 2, the pull rod 14 is inserted into the notch 201 of the pressing plate 2, the suspension arm lifting cylinder 11 contracts, the electromagnet 13 descends, then the electromagnet 13 is powered off, and the pressing plate 2 is placed above a workpiece; then the lifting cylinder 11 extends, the pressure plate advancing and retreating cylinder 10 extends, and the suspension arm 12 and the electromagnet 13 withdraw from the upper part of the workpiece; the hydraulic cylinder 23 is contracted, the pull rod 14 is descended, and the pressing plate 2 is tightly pressed above the workpiece by the pressing block 1401;
7) grinding a workpiece: the first servo motor 26 drives the slide carriage 25 to move towards the direction of the operation platform 1, and the grinding wheel 15 is contacted with a workpiece; the motor 27 drives the grinding wheel 15 to rotate, and simultaneously the second servo motor 28 drives the rotating shaft 4 to rotate so as to grind the outer arc of the brake shoe;
8) after the workpiece is ground, the processes 1 to 7 are repeated.
The invention can process two workpieces simultaneously, when in operation, a worker can take one workpiece by both hands and place the two workpieces into the workpiece positioning tool 3 simultaneously, the worker does not need to manually prop open the workpieces, and the propping of the workpieces and the placing of the pressing plate are automatically finished by the invention, thereby improving the automation degree of the outer arc grinding procedure of the brake shoe, effectively improving the production efficiency and reducing the labor intensity of the worker; meanwhile, compared with the traditional single-station grinding machine, the invention needs less staff, and can save labor cost.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. The double-station automatic outer arc grinding machine for the drum brake shoes is characterized by comprising an operation platform (1), a pressing plate retracting mechanism, a pressing plate (2), a pressing plate pressing mechanism, a grinding mechanism and a hoisting mechanism for transporting the brake shoes;
two workpiece positioning tools (3) are arranged on the operation platform (1), a hollow rotating shaft (4) is arranged on one side of each workpiece positioning tool (3), and a grinding positioning tool (5) is arranged at the upper end of each rotating shaft (4); two sides of the grinding positioning tool (5) are provided with workpiece correcting mechanisms (6) for correcting the positions of the brake shoes;
the pressing plate retracting mechanism comprises a pressing plate advancing and retreating cylinder (10), a suspension arm lifting cylinder (11) and a suspension arm (12); the pressing plate advancing and retreating cylinder (10) is arranged between the two grinding and positioning tools (5), the suspension arm lifting cylinder (11) is fixed with an end plate of the pressing plate advancing and retreating cylinder (10), the suspension arm (12) is fixed with the end plate of the suspension arm lifting cylinder (11), and electromagnets (13) used for adsorbing the pressing plate (2) are arranged at two ends of the suspension arm (12);
the pressing plate pressing mechanism comprises a pull rod (14) which is sleeved in the rotating shaft (4) and can move up and down, and a pressing block (1401) is arranged at the upper end of the pull rod (14);
and grinding mechanisms are arranged on two sides of the operating platform (1) and comprise grinding wheels (15) used for grinding the outer arcs of the brake shoes.
2. The drum brake shoe double-station automatic outer arc grinding machine according to claim 1, characterized in that: the workpiece correcting mechanism (6) comprises workpiece correcting cylinders (7) symmetrically arranged on two sides of the grinding positioning tool (5), a second mounting plate (8) is arranged on an end plate of each workpiece correcting cylinder (7), and two correcting clamping blocks (9) are arranged on the second mounting plate (8).
3. The drum brake shoe double-station automatic outer arc grinding machine of claim 2, wherein: the hoisting mechanism comprises two portal frames (16) arranged at two sides of the operation platform (1); the upper end of portal frame (16) sets up pneumatic tongs advance and retreat cylinder (17), sets up pneumatic tongs lift cylinder (18) on the slip table of pneumatic tongs advance and retreat cylinder (17), sets up first mounting panel (19) on the end plate of pneumatic tongs lift cylinder (18), and the lower extreme of first mounting panel (19) sets up two pneumatic tongs (20), and the distance between two pneumatic tongs (20) equals the distance between work piece location frock (3) and grinding location frock (5).
4. The drum brake shoe double-station automatic outer arc grinding machine of claim 3, wherein: the pneumatic gripper (20) comprises a pneumatic claw (21) and an inner support piece (22) fixed on fingers of the pneumatic claw (21), wherein an inner support boss (2201) integrally formed with the inner support piece (22) is arranged on the inner support piece (22).
5. The drum brake shoe double-station automatic outer arc grinding machine of claim 4, wherein: the lower end of the pull rod (14) extends out of the rotating shaft (4), and the lower end of the pull rod (14) is connected with a hydraulic rod of the hydraulic cylinder (23).
6. The drum brake shoe double-station automatic outer arc grinding machine of claim 5, wherein: the pressing plate (2) is provided with a notch (201), and the width of the notch (201) is larger than the diameter of the pull rod (14) and smaller than the diameter of the pressing block (1401).
7. The drum brake shoe double-station automatic outer arc grinding machine of claim 6, wherein: the grinding mechanism further comprises a linear guide rail (24), a slide carriage (25) capable of sliding on the linear guide rail (24), a first servo motor (26) used for driving the slide carriage (25) to move on the linear guide rail (24) and a motor (27) used for driving a grinding wheel (15) to rotate, and the grinding wheel (15) is rotatably arranged on the slide carriage (25).
8. The drum brake shoe double-station automatic outer arc grinding machine according to any one of claims 1 to 7, characterized in that: the upper end of the workpiece positioning tool (3) is provided with a circular boss (301) with the same diameter as that of a brake shoe, the upper end of the circular boss (301) is provided with a positioning pin (302), one side, far away from the positioning pin (302), of the circular boss (301) is provided with a cutting groove (304), a groove plate (305) is arranged in the cutting groove (304), and two positioning wedges (306) which are integrally formed with the groove plate (305) are arranged on the groove plate (305); the two positioning wedges (306) are arranged at intervals, and the opposite surfaces of the two positioning wedges (306) are inclined surfaces.
9. The drum brake shoe double-station automatic outer arc grinding machine of claim 8, wherein: the center of grinding location frock (5) sets up and is used for with pivot (4) complex shaft hole, the top of grinding location frock (5) is provided with round pin axle (501) and splint (502) that are used for fixing a position the brake shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010244901.0A CN111283520B (en) | 2020-03-31 | 2020-03-31 | Drum brake shoe double-station automatic outer arc grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010244901.0A CN111283520B (en) | 2020-03-31 | 2020-03-31 | Drum brake shoe double-station automatic outer arc grinding machine |
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| Publication Number | Publication Date |
|---|---|
| CN111283520A true CN111283520A (en) | 2020-06-16 |
| CN111283520B CN111283520B (en) | 2024-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010244901.0A Active CN111283520B (en) | 2020-03-31 | 2020-03-31 | Drum brake shoe double-station automatic outer arc grinding machine |
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